1.
    发明专利
    未知

    公开(公告)号:NO803508L

    公开(公告)日:1981-05-22

    申请号:NO803508

    申请日:1980-11-20

    Abstract: An emulsifier system for use in the tertiary recovery of oil comprises a mixture of a surfactant comprising a neutralized, oxidized solvent extracted oil and a cosurfactant comprising an alcohol having no more than 12 carbon atoms. The cosurfactant alcohol component preferably comprises a mixture of C2 to C8 alcohols. Tertiary recovery of oil is achieved by injecting brine or water, the emulsifier system and a polymer into an injection well and recovering oil from a producing well.

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